JP6209838B2 - Disaster prevention service provision method, disaster prevention system, disaster prevention virtual server construction program - Google Patents

Description

  The present invention relates to a disaster prevention service providing method, a disaster prevention system, and a disaster prevention virtual server construction program.

  The disaster prevention system is necessary to share the information collected by the disaster response headquarters with all government agencies and local governments in the event of a disaster, and its importance is recognized. When a disaster occurs, the disaster prevention system stores disaster information related to disasters provided from various fields in a database so that it can be viewed from the terminal devices installed in all government offices and local governments via the Internet and dedicated lines. To.

  Conventional disaster prevention systems are built with their own computer systems by government agencies and local governments that act as disaster response headquarters. And, in general, the disaster prevention system is constructed in consideration of the maximum possible disaster.

  The disaster prevention system is described in the following patent documents.

WO 2008/102739 A1 JP 2004-206247 A JP2011-209811A JP 2001-357474 A

  Since disasters occur suddenly at certain times, it is necessary to keep the disaster prevention system in operation. However, in normal times when no disaster has occurred, the disaster prevention system is only used during disaster prevention drills, and making it always in operation during normal times increases costs.

  In addition, even if a disaster prevention system is constructed and put into operation, if a disaster occurs in the area where the disaster prevention system is installed and the operation of the disaster prevention system stops, sharing disaster information using the disaster prevention system, etc. It becomes difficult to provide disaster prevention services. Therefore, it is necessary to take measures when an operating disaster prevention system is shut down due to a disaster.

  Therefore, in one aspect, an object of the present invention is to provide a disaster prevention service providing method, a disaster prevention system, and a disaster prevention virtual server construction program for reducing the cost of a disaster prevention system in a normal time when no disaster occurs.

The first aspect of the provision method of the disaster prevention service is a receiving process in which the terminal device receives disaster information having a disaster area and a disaster level when a disaster occurs;
The terminal device calculates the scale of the disaster area above the predetermined disaster level from the disaster information, and generates the disaster virtual server to be generated based on the hardware resource table or function of the disaster virtual server corresponding to the disaster area scale. A generation process for generating hardware resource information;
A transmission step in which the terminal device transmits a disaster prevention virtual server generation and activation request having hardware resource information of the disaster prevention virtual server to a data center having hardware resources;
The data center generates and starts the disaster prevention virtual server by allocating hardware resources of the disaster prevention virtual server based on hardware resource information of the disaster prevention virtual server; and
The disaster prevention virtual server generated and activated in the data center includes a disaster service providing step of providing a predetermined disaster service.

  According to the 1st side, the cost of the disaster prevention server at normal time can be reduced.

It is a figure which shows the disaster prevention system which has a disaster prevention server and the terminal using it. It is a figure which shows the disaster prevention system of the normal time in 1st Embodiment. It is a figure which shows the disaster prevention system at the time of the disaster in 1st Embodiment. It is a figure which shows the disaster prevention system of the normal time in 2nd Embodiment. It is a figure which shows the disaster prevention system at the time of the disaster in 2nd Embodiment. It is a figure which shows the whole cloud system structure in 1st, 2nd embodiment. It is a flowchart figure which shows the process which builds a disaster prevention virtual server. It is a specific flowchart figure of process S12 in which a disaster prevention virtual server construction application analyzes disaster information and produces | generates disaster prevention virtual server information. It is a figure which shows an example of disaster information DI and municipality population information. It is a figure which shows an example of a disaster prevention virtual server table. It is a figure which shows an example of a disaster prevention virtual server table. It is a figure which shows an example of a disaster prevention virtual server table. It is a figure which shows an example of the disaster prevention virtual server constructed | assembled in the data center. It is a flowchart figure which shows the production | generation procedure of the disaster prevention virtual server by the management server in a data center, and a hypervisor. It is a flowchart figure which shows the starting procedure of the disaster prevention virtual server by the management server in a data center, and a hypervisor. It is a block diagram of a terminal, a management server, and a disaster prevention virtual server.

  FIG. 1 is a diagram illustrating a disaster prevention system having a disaster prevention server and a terminal using the disaster prevention server. The disaster prevention server 100 is constructed by, for example, a disaster countermeasure headquarters in a public office and installed in a data center of the public office. The disaster prevention server 100 is installed with the disaster prevention application B-APL, and the disaster prevention application B-APL is executed by the computer of the disaster prevention server, thereby providing a disaster prevention service.

  The disaster prevention service, for example, stores disaster information received or collected by the disaster response headquarters in a database and stores disaster information in response to accesses via the network 7 such as the Internet or dedicated lines from government offices and local government terminals C1 and C2. It is a service that provides. For example, in the case of an earthquake, the disaster information includes seismic intensity information by prefecture, municipality, and the damage status of roads and bridges due to the earthquake. Furthermore, disaster information includes information on evacuation centers for each region.

  The disaster prevention server 100 constructed by the disaster countermeasure headquarters in this way needs to be constructed in advance and always in operation in preparation for a sudden disaster. However, it is rare for the disaster prevention server 100 to be used during normal periods when no disaster has occurred except during training. For this reason, by operating constantly during normal times, costs such as electric power are generated, and it is necessary to replace the hardware of the disaster prevention server 100 every several years.

[Outline of the disaster prevention system of the first and second embodiments]
FIG. 2 is a diagram showing a normal disaster prevention system according to the first embodiment. In the normal disaster prevention system, as in FIG. 1, the disaster prevention server 100 is constructed by the disaster countermeasure headquarters or the like and is always in operation. The disaster prevention server 100 can be accessed via the network 7 from terminals C1 and C2 of public offices and local governments, and provides disaster information in response to the access.

  On the other hand, the data center 8 has a plurality of physical servers PS, and the infrastructure itself such as a virtual server VS and a network (not shown) for constructing and operating a computer system for a cloud service user is connected to the network. 7 to provide.

  In FIG. 2, virtual servers VS1 and VS2 are generated and activated by a hypervisor HV (virtualization software) operating on the physical server PS in response to a request from a cloud service user terminal (not shown). Applications APL1 and APL2 are installed on the virtual servers VS1 and VS2, respectively, and a virtual system is constructed.

  The disaster countermeasure headquarters terminal CX is also one of the cloud service users' terminals. It accesses the management server in the data center 8, selects the hardware resources necessary for the disaster prevention system, and creates a virtual server VS. Can be used as a disaster prevention virtual server. However, since there is no disaster during normal times, it is not necessary to create and start virtual servers that constitute the disaster prevention system in the data center. As a result, the disaster response headquarters is not charged by the cloud service provider of the data center 8 in normal times.

  However, in the event of a disaster, the Disaster Countermeasures Headquarters has signed a service contract with a cloud service provider so that a disaster prevention virtual server can be constructed by selecting a hardware resource, creating and starting a virtual server. In preparation for a sudden disaster, the terminal CX of the disaster countermeasure headquarters stores a disaster prevention application to be installed in the disaster prevention system in the storage 20 in the data center 8 in advance.

  FIG. 3 is a diagram illustrating the disaster prevention system in the first embodiment during a disaster. In this example, it is assumed that, in the event of a disaster, the data center where the disaster prevention server 100 that has been operating in normal times is damaged and has been stopped.

  When the disaster prevention server 100 that has been operating in a normal state is stopped in such a case, the terminal CX of the disaster countermeasure headquarters receives the disaster information DI provided by the Japan Meteorological Agency, etc., and the disaster area and disaster level of the disaster information DI From the above information, the scale (for example, population) of the disaster area above a predetermined disaster level is calculated, and hardware resource information of the disaster virtual server corresponding to the disaster area scale is generated. The hardware resource information includes, for example, the number of CPUs, clock frequency, memory capacity (GB), hard disk capacity (GB), database capacity (GB), network bandwidth (Gpbs), and the like. Then, the terminal CX accesses the data center 8 to generate and start a virtual server VS3 corresponding to the generated hardware resource information. Then, the terminal CX causes the data center 8 to install the disaster prevention application stored in the storage 20 in advance in the activated virtual server VS3, and construct and operate the disaster prevention virtual server B-VS by the virtual server VS3.

  As a result, the terminals C1 and C2 in prefectures and municipalities can access the disaster prevention virtual system B-VSYS instead of the disaster prevention server 100 in normal times and receive disaster prevention services such as provision of disaster prevention information.

  According to the first embodiment described above, the disaster prevention virtual server VS3 as a backup when the disaster prevention server 100 is damaged is generated and activated in the data center 8 when a disaster occurs. Therefore, it is not necessary to construct a disaster prevention server for backup in normal times, and the cost can be reduced.

  FIG. 4 is a diagram showing a normal disaster prevention system according to the second embodiment. Unlike the embodiment of FIG. 2, the disaster prevention server 100 by the disaster countermeasure headquarters or the like is not constructed. During normal times, disaster prevention servers are rarely used, so the cost is reduced without building your own disaster prevention server.

  However, in the event of a disaster, the Disaster Countermeasures Headquarters makes a service contract with the cloud service provider so that hardware resources in the data center can be allocated according to the scale of the disaster, and virtual servers can be created and started to build disaster prevention virtual systems. Is concluded. In preparation for a sudden disaster, the disaster countermeasure headquarters stores in advance the disaster prevention application to be installed in the disaster prevention system in the storage 20 in the data center 8.

  That is, in the second embodiment of FIG. 4, the disaster prevention virtual server system as a backup in the first embodiment of FIG. Make it possible to build a virtual server system.

  FIG. 5 is a diagram showing a disaster prevention system in a second embodiment. As in FIG. 3, when a disaster occurs, the terminal CX of the disaster response headquarters receives the disaster information DI, generates and starts a virtual server VS3 in the data center 8 according to the scale of the disaster, and performs disaster prevention. Build virtual server B-VS.

  In other words, when a disaster occurs, the terminal CX of the disaster response headquarters receives disaster information DI provided by the Japan Meteorological Agency, etc. (For example, population) is calculated, and hardware resource information of the disaster prevention virtual server corresponding to the disaster area scale is generated. The hardware resource information is as described above. Then, the terminal CX accesses the data center 8, and causes the data center 8 to generate and start a virtual server VS3 corresponding to the hardware resource information of the disaster prevention virtual server. Then, the terminal CX installs the disaster prevention application stored in the storage 20 in advance in the virtual server VS3 generated and started in the data center 8, and constructs and operates the disaster prevention virtual server B-VS by the virtual server VS3. .

  According to the second embodiment, a disaster prevention virtual server B-VS is constructed by generating and starting a virtual server VS in a short time when a disaster occurs. Therefore, it is not necessary to construct a disaster prevention server in normal times, and costs can be reduced. In addition, since it is not necessary to construct and operate a disaster prevention virtual server system in the data center 8 during normal times, there is no charge for cloud services during normal times.

  Hereinafter, in the first and second embodiments, a process for quickly building a disaster prevention virtual server system by the terminal CX such as the disaster countermeasure headquarters when a disaster occurs will be described in detail. First, an outline of a cloud system used for building a disaster prevention virtual server system will be described.

[Configuration of cloud system in this embodiment]
FIG. 6 is a diagram showing the overall configuration of the cloud system in the first and second embodiments. In the data center 8, a virtual server group VS-G generated in hardware such as a physical machine PM, a cloud service portal site 2A that provides a management console to a cloud user, and a management server 3 are provided. . The cloud user terminal 1 and the client terminal 6 of the service of the cloud user can be connected to the data center 8 via a network 7 such as the Internet or a dedicated line. In addition to the cloud service portal site 2A, an API endpoint 2B for directly transmitting a command (a kind of API) from the cloud user terminal 1 to the management server 3 is also provided.

  The virtual server group (or virtual machine group) VS-G has a plurality of physical machines PM (or physical servers and physical computers), and each physical machine PM has a CPU, memory (DRAM), hard disk (HDD), storage, etc. Large-capacity memory and network. Resources of the physical machine PM, which is hardware, are allocated to a plurality of virtual servers VS. The cloud service portal site 2 and the management server 3 may be constructed by these virtual servers VS, for example.

  As described above, the cloud service provided to the cloud user by the cloud system is a service that provides the infrastructure itself such as a virtual server and a network for constructing and operating the computer system via the network 7.

  The cloud user accesses the cloud service portal site 2 from the terminal 1 and uses the management console to specify the specifications required for the virtual server, such as CPU clock frequency, memory capacity (GB), hard disk capacity (MB / sec, Select IOPS) and network bandwidth (Gbps), and conclude a cloud usage agreement for them. In addition, the cloud user terminal 1 accesses the cloud service portal site 2 to monitor the operation status of the virtual server and operate the operation of the virtual server.

  The management server 3 manages the physical machine PM and the like in cooperation with the hypervisor (virtualization software) HV, and further generates and manages the virtual server VS by allocating the physical machine hardware to the virtual server VS. The management server 3 has a management information table 322 including a virtual server (VS) information table (TB).

  The management server 3 registers a virtual server in the management information table 322 when creating a new virtual server or virtual server system.

  The hypervisor HV (virtualization software) operates on the physical machine, and operates the virtual server by allocating the CPU, memory, hard disk, network, etc. of the hardware physical machine PM according to the instruction from the management server 3 Software.

  The virtual server VS has an image file having an OS, middleware MW, application APL, database DB, etc. in its hard disk in addition to the physical machine PM which is the hardware described above. The image file is written from the hard disk to the memory and the desired service is provided.

  The client terminal 6 is a client terminal that receives a service of a system operated by a cloud user. The client terminal 6 usually accesses the cloud user's virtual server VS via the network 7 and receives a service operated by the cloud user.

  The management server 3 monitors the load state of the virtual server VS in the system, and performs processing such as newly adding a virtual server VS and starting it when an overload state occurs.

  The hypervisor HV operates on the physical machine PM, allocates resources of hardware groups such as physical machines to the virtual server VS, and operates the virtual server VS. For this purpose, the hypervisor HV, for example, temporarily stops the virtual server generation unit that generates the virtual server, the virtual server activation unit that starts the virtual server, the virtual server shutdown unit that shuts down the virtual server, and the virtual server that is active In other words, a virtual server suspend unit that suspends, a virtual server resume unit that resumes, that is, resumes a suspended virtual server, and a virtual server operation information collection unit that collects virtual server operation information.

  Furthermore, the hypervisor HV saves a VS information file that stores the generated virtual server VS information in a disk (not shown). The hypervisor HV stores the virtual server information in this VS information file in response to the virtual server generation command, and starts the virtual server by referring to this VS information file in response to the virtual server start command. The above generation command and start command are one of APIs published by the hypervisor.

  The management server 3 includes software and a storage unit in addition to hardware such as a CPU (not shown). The software in the management server includes, for example, a cloud user management unit that performs cloud user management such as billing for cloud users who have signed a cloud contract at the cloud service portal site 2A, and a physical machine based on the cloud contract. A virtual server generation unit that allocates hardware resources and generates a virtual server VS, a virtual server management unit that manages the virtual server, and a virtual server monitoring unit that monitors the operation of the virtual server. The virtual server generation unit transmits a generation command having VS information to the hypervisor HV via, for example, a physical machine, and stores the VS information in a VS information file.

  In addition, the software in the management server includes a virtual server start control unit that instructs the hypervisor HV to start the virtual server via the physical machine, and a virtual server shutdown control that instructs the hypervisor HV to shut down the active virtual server. The virtual server suspend control unit that instructs the hypervisor HV to suspend the active virtual server, the virtual server resume control unit that instructs the hypervisor HV to resume the virtual server, and the virtual server APL that installs the application on the virtual server It has an installation control unit.

  The storage unit in the management server stores, for example, a virtual server information table including virtual server operation information reported from the hypervisor HV.

[Building a disaster prevention virtual server]
FIG. 7 is a flowchart showing processing for constructing a disaster prevention virtual server. The disaster prevention virtual server construction process is a process performed when a disaster prevention virtual server is constructed in the data center when a disaster occurs in the first and second embodiments of FIGS. 3 and 5.

  FIG. 7 shows processing by the terminal CX of the disaster countermeasure headquarters and processing by the data center 8. The terminal CX is installed at the disaster prevention headquarters, etc., and is connected to a government agency that sends disaster information such as the Japan Meteorological Agency through a dedicated line. Alternatively, the terminal CX may be a mobile terminal possessed by a person concerned at the disaster prevention headquarters.

  A disaster prevention virtual server construction application (APL) for constructing a disaster prevention virtual server is installed in the terminal CX. This disaster prevention virtual server construction application receives the disaster information DI, analyzes the disaster information DI, calculates the scale of the disaster area, determines the hardware resource information of the disaster prevention virtual server corresponding to the scale of the disaster area, It has a function of accessing the center 8 and constructing a disaster prevention virtual server based on hardware resource information of the disaster prevention virtual server. It is desirable that the disaster prevention virtual server construction application automatically executes the above-mentioned processing without requiring any manual operation from the reception of disaster information.

  FIG. 16 is a configuration diagram of a terminal, a management server, and a disaster prevention virtual server in the present embodiment. The terminal CX, the management server 8, and the disaster prevention virtual server B-VS all have a computer configuration. That is, each of the terminal CX, the management server 8, and the disaster prevention virtual server includes a CPU that is a processor, a memory MEM, and a program storage medium PGM in which an OS, middle air, hypervisor, application program, and the like are stored. Then, the terminal CX accesses the management server 3 and constructs the disaster prevention virtual server B-VS in the data center.

  As shown in FIG. 7, when a disaster occurs (S10), the disaster prevention virtual server construction application of the terminal CX receives the disaster information DI (S11). The disaster prevention virtual server construction application of terminal CX is always running and can receive disaster information DI from the Japan Meteorological Agency. The disaster information DI is transmitted in an XML file format, for example.

  FIG. 9 is a diagram illustrating an example of the disaster information DI and the municipality population information. The disaster information DI when the disaster is an earthquake has seismic intensity information for each municipality as shown in FIG. The disaster information in the case where the disaster is a tsunami includes, for example, predicted or actual tsunami height information for each municipality. If the disaster is an accident at a nuclear power plant, for example, it has expected or actual radioactivity concentration information for each municipality.

  The disaster prevention virtual server construction application analyzes the received disaster information DI, calculates the scale of the disaster area above the predetermined disaster level, and based on the hardware resource table or function of the disaster virtual server corresponding to the disaster area scale, The hardware resource information of the disaster prevention virtual server to be generated is determined and generated (S12).

  Specifically, in the case of the earthquake in FIG. 9, for example, the total population of municipalities whose disaster level is 4 or greater is calculated with reference to the municipal population information shown in FIG. Information. The amount of disaster information that should be shared via the disaster prevention virtual server increases and the frequency of access to damage information increases in proportion to the population of the affected area with a high level of damage. The population is suitable. Alternatively, the total area of municipalities with seismic intensity 4 or higher may be used as scale information of the affected area.

  In addition, the disaster prevention virtual server construction application should be constructed in accordance with the calculated disaster area scale based on the virtual server table or function having the hardware resources of the disaster virtual server corresponding to the disaster area scale determined in advance. Determine and generate virtual server hardware resource information.

  10, FIG. 11, and FIG. 12 are diagrams illustrating an example of the disaster prevention virtual server table. Here, it is assumed that the disaster prevention virtual server has a disaster prevention virtual server on which the disaster prevention application is installed, a WEB server that processes WEB access to the disaster prevention virtual server, and a database server that stores disaster information. It is assumed that a disaster prevention virtual server system is configured by two virtual servers.

  FIG. 10 is a diagram illustrating a table example of the disaster prevention virtual server on which the disaster prevention application is installed. The disaster prevention virtual server tables are generated separately for earthquakes, tsunamis, and nuclear accidents, and are stored in the terminal CX.

  The disaster prevention virtual server table in FIG. 10 shows the disaster prevention virtual server CPU level (levels 1 to 32), memory capacity, disk capacity, and database (DB) capacity corresponding to the population in the disaster area. Have. Here, the CPU level is, for example, the number of CPUs or the number of CPU clocks, which is the performance level of the CPU provided by the contracted data center. The database capacity is set to about 80% of the disk capacity. In the example of FIG. 10, the scale of the hardware resources required for the disaster prevention virtual server increases as the population of the disaster area whose disaster level is equal to or higher than the predetermined level increases. For example, it is simply proportional to the population.

  The disaster prevention virtual server table is preferably provided separately for earthquakes, tsunamis, and nuclear accidents. This is because the scale of disaster prevention virtual servers to be constructed corresponding to the disaster level varies depending on whether the disaster is an earthquake, tsunami, or nuclear accident.

  FIG. 11 is a diagram illustrating an example of a virtual server table of the disaster prevention WEB. The virtual server table of the disaster prevention web is generated separately for the earthquake, the tsunami, and the nuclear accident, respectively, and stored in the terminal CX, as in FIG.

  The example of the virtual server table of the disaster prevention web in FIG. 11 also has the CPU level (levels 1 to 32), the memory capacity, the disk capacity, and the database capacity of the disaster prevention virtual server corresponding to the population of the disaster area. . In the example of FIG. 11 also, as the population of the disaster area whose disaster level is a predetermined level or more increases, the scale of the hardware resources necessary for the disaster prevention virtual server increases. For example, it is simply proportional to the population. Furthermore, since the disaster prevention WEB virtual server provides a WEB service, the memory capacity corresponding to the population in the disaster area is doubled compared to the case of FIG. This is because it is expected that a larger memory capacity is better in order to handle the enormous accesses assumed when a disaster prevention WEB virtual server is constructed in advance.

  FIG. 12 is a diagram illustrating an example of a virtual server table of the disaster prevention DB. As in FIG. 10, the virtual server table of the disaster prevention DB is generated separately for the earthquake, the tsunami, and the nuclear accident, and is stored in the terminal CX.

  The example of the virtual server table of the disaster prevention DB in FIG. 12 also has the CPU level (levels 1 to 32), the memory capacity, the disk capacity, and the database capacity of the disaster prevention virtual server corresponding to the population of the disaster area. . In the example of FIG. 12, the scale of the hardware resources necessary for the disaster prevention virtual server increases as the population of the disaster area whose disaster level is equal to or higher than the predetermined level increases, for example, simply proportional to the population.

  FIG. 8 is a specific flowchart of processing S12 in which the disaster prevention virtual server construction application analyzes disaster information and generates disaster prevention virtual server information.

  The disaster prevention virtual server construction application of the terminal CX analyzes the received disaster information DI (S121). When the disaster type of the disaster information DI is earthquake (YES in S122), for example, the area population with a seismic intensity of 5 or more is calculated as the disaster area scale from the disaster information, and the earthquake virtual server table (Fig. 10) is referenced. Disaster prevention virtual server information having hardware resource information necessary for the disaster prevention virtual server is generated (S123).

  If the disaster type of the disaster information DI is a tsunami (YES in S124), the disaster prevention virtual server construction application of the terminal CX calculates the population in the area of the expected tsunami Xcm or more as the disaster area scale from the disaster information, Disaster prevention virtual server information having information on hardware resources necessary for the disaster prevention virtual server is generated with reference to the virtual server table (FIG. 11) (S125).

  If the disaster type of the disaster information DI is a nuclear accident (YES in S124), the disaster prevention virtual server construction application on the terminal CX calculates the population of the area above the predicted radioactivity Y Sievert as the disaster area scale from the disaster information. Then, referring to the tsunami virtual server table (FIG. 12), the disaster prevention virtual server information having the hardware resource information necessary for the disaster prevention virtual server is generated (S126).

  In the above processes S123, S125, and S127, the disaster prevention virtual server construction application generates disaster prevention virtual server information having hardware resource information necessary for the disaster prevention virtual server with reference to the virtual server table. However, the disaster prevention virtual server construction application of the terminal CX may store the virtual server table as a function and generate disaster prevention virtual server information corresponding to the disaster area scale based on the virtual server table function.

  Returning to the flowchart of FIG. 7, the disaster prevention virtual server construction application of the terminal CX automatically logs in to the data center and requests generation of a disaster prevention virtual server with the determined disaster prevention virtual server information (S13). This login to the data center is performed by the management console 2A, for example. Alternatively, it is performed at API end point 2B.

In response to the login of the disaster prevention virtual server generation request, the management server 3 in the data center 8 disables subsequent logins other than the terminal that has logged in first (S19). When a disaster occurs, the disaster information DI is simultaneously transmitted to a plurality of terminals CX. Therefore, there is a risk that disaster prevention virtual server construction applications of a plurality of terminals CX compete to access the data center and make a disaster prevention virtual server generation and activation request.

  Then, the management server 3 confirms whether or not the generation request of the disaster prevention virtual server is possible with reference to the virtual server information generated and activated in the current physical machine PM (S20). If the management server 3 determines that the hardware resource indicated in the disaster prevention virtual server information of the disaster prevention virtual server generation request can be allocated (YES in S21), the hardware of the disaster prevention virtual server generation request A disaster prevention virtual server is generated by allocating resources (S23). Then, the management server 3 replies to the disaster prevention virtual server construction application of the terminal CX that the disaster prevention virtual server has been generated. The generation of the disaster prevention virtual server is performed, for example, when the management server 3 transmits a generation command to the hypervisor HV.

  If the management server 3 determines that it is difficult to allocate the hardware resources indicated in the disaster prevention virtual server information in the disaster prevention virtual server generation request because many virtual servers have already been created on the physical machine PM (NO in S21), the generation request for the disaster prevention virtual server is rejected to the disaster prevention virtual server construction application of the terminal CX (S22).

  When the disaster prevention virtual server is generated (YES in S14), the disaster prevention virtual server construction application of the terminal CX then transmits a disaster prevention virtual server activation request to the data center 8 (S16). In response to this, the management server 3 in the data center 8 activates the disaster prevention virtual server (S24). The activation request for the disaster prevention virtual server is made, for example, when the management server 3 transmits an activation command to the hypervisor HV.

  Finally, the disaster prevention virtual server construction application of the terminal CX transmits a request for installing the disaster prevention application to the activated disaster prevention virtual server to the data center 8 (S17). In response to this, the management server 3 of the data center 8 installs the disaster prevention virtual server running the disaster prevention application (S25).

  If the management server 3 determines in step S21 above that it is difficult to allocate hardware resources for the disaster prevention virtual server and rejects it in step S22, the disaster prevention virtual server construction application performs a review process, and the hardware resources The disaster prevention virtual server information modified to reduce the scale of the server is generated (S15). Then, step S13 is repeated. This is to secure the minimum hardware resources of the disaster prevention virtual server even when it is difficult to allocate the ideal hardware resources corresponding to the scale of the disaster area.

  The disaster prevention system including the disaster prevention virtual server constructed in the data center 8 by the above processing notifies the relevant government office or local government that the disaster prevention virtual server has started (S26). After that, the disaster prevention virtual server provides a predetermined disaster prevention service in response to access from terminals C1, C2, etc. of public offices and local governments.

  In the flowchart of FIG. 7, the disaster prevention virtual server construction application of the terminal CX sends the disaster prevention virtual server generation request S13 and the activation request to the management server 3 in the data center 8 based on the hardware resource information of the disaster prevention virtual server information. S16 was sent separately. However, the generation and activation requests for the disaster prevention virtual server may be transmitted to the management server 3 at the same time to cause the management server 3 to generate and activate the disaster prevention virtual server.

  FIG. 13 is a diagram illustrating an example of a disaster prevention virtual server constructed in a data center. The disaster prevention virtual server B-VS shown in FIG. 13 is constructed by the disaster prevention virtual server construction process in the flowchart of FIG. That is, virtual servers VS3-1, VS3-2, and VS3-3 are generated on the physical machine PM. A disaster prevention application is installed in the virtual server VS3-1, and a service by the disaster prevention application is provided. For example, disaster information transmitted or collected is stored in a database, or disaster information requested from terminals C1, C2, etc. is extracted from the database and returned.

  The virtual server VS3-2 is installed with a disaster prevention WEB application to control reception and return of access from the network 7. In addition, a disaster prevention database application is installed in the virtual server VS3-3 to control storage and extraction of disaster information from the database.

  The disaster prevention virtual server B-VS in FIG. 13 is a disaster prevention virtual system B-VSYS configured by three virtual servers VS3-1, VS3-2, and VS3-3. Applications installed in each of these virtual servers are generated in advance and stored in the storage 20 in the data center.

  Finally, the disaster prevention virtual server generation and startup process by the management server and hypervisor in the data center will be described.

  FIG. 14 is a flowchart showing a procedure for generating a disaster prevention virtual server by a management server and a hypervisor in the data center. When receiving the virtual server generation command transmitted from the disaster prevention virtual server construction application of the terminal CX via the management console 2A (S30), the management server 3 verifies whether the disaster prevention virtual server can be generated as requested (S21 ), If it cannot be generated (NO in S21), the terminal CX is denied generation of the virtual server (S22). On the other hand, if it can be generated (YES in S21), the management server 3 transmits a virtual server generation command using the disaster prevention virtual server information included in the virtual server generation command as a parameter to the hypervisor HV (S31). When the hypervisor HV receives the virtual server generation command (S32), the hypervisor HV saves the disaster prevention virtual server information included in the virtual server generation command in the hypervisor virtual server information file (S33). Thus, the hardware resource of the disaster prevention virtual server information is allocated.

  FIG. 15 is a flowchart showing a start-up procedure of the disaster prevention virtual server by the management server and the hypervisor in the data center. The management server 3 receives a virtual server activation command from the disaster prevention virtual server construction application of the terminal CX via the management console 2A (YES in S40). In response to this, the management server 3 transmits a startup command using the startup virtual server information included in the virtual server startup command as a parameter to the hypervisor (S41). On the other hand, when the hypervisor receives the virtual server start command (YES in S42), the hypervisor starts the virtual server VS of the start virtual server information included in the virtual server start command (S43).

  As described above, the disaster prevention virtual server creation application of the terminal CX may simultaneously generate and start the disaster prevention virtual server. In this case, the management server 3 generates a generation command according to the flowchart of FIG. The hypervisor HV continuously generates and starts a disaster prevention virtual server.

  As described above, according to the present embodiment, when a disaster occurs, the reception of disaster prevention information transmitted from the Japan Meteorological Agency or the like is used as a trigger, and the hardware resources of the disaster prevention virtual server according to the scale of the disaster area are determined. Request allocation to the data center, and create and start a virtual disaster prevention server. Therefore, a disaster prevention virtual server can be constructed in a short time after a disaster occurs, and disaster prevention services such as provision of disaster prevention information can be provided in a timely manner. Since a disaster prevention virtual server is not constructed in normal times, costs can be reduced.

  The above embodiment is summarized as follows.

(Appendix 1)
A receiving process in which a terminal device receives disaster information having a disaster area and a disaster level when a disaster occurs;
The terminal device calculates the scale of the disaster area above the predetermined disaster level from the disaster information, and generates the disaster virtual server to be generated based on the hardware resource table or function of the disaster virtual server corresponding to the disaster area scale. A generation process for generating hardware resource information;
A transmission step in which the terminal device transmits a disaster prevention virtual server generation and activation request having hardware resource information of the disaster prevention virtual server to a data center having hardware resources;
The data center generates and starts the disaster prevention virtual server by allocating hardware resources of the disaster prevention virtual server based on hardware resource information of the disaster prevention virtual server; and
A disaster prevention service providing method in which a disaster prevention virtual server generated and activated in the data center includes a disaster service providing step of providing a predetermined disaster service.

(Appendix 2)
In Appendix 1,
In the transmission step, the terminal device transmits the disaster prevention virtual server generation and activation request after logging into the data center,
The data center provides a disaster prevention service that does not permit login from another terminal device after first permitting the terminal device to log in.

(Appendix 3)
In Appendix 1,
The data center checks whether it is possible to allocate hardware resources in the hardware resource information of the disaster prevention virtual server transmitted in the transmission step, and if not, the disaster prevention virtual server is generated in the terminal device And a confirmation process for rejecting the activation request,
In response to the refusal, the terminal device again transmits a disaster prevention virtual server generation and activation request having hardware resource information modified to reduce the scale of the hardware resources of the disaster prevention virtual server to the data center. A method for providing a disaster prevention service including a retransmission process.

(Appendix 4)
In Appendix 1,
The method of providing a disaster prevention service, wherein the scale of the disaster area above the predetermined disaster level is the population of the disaster area above the predetermined disaster level.

(Appendix 5)
In Appendix 1,
A disaster virtual server startup program for constructing the disaster virtual server is installed in the terminal device,
The disaster virtual server startup program is a method for providing a disaster prevention service that causes the computer of the terminal device to automatically execute the reception process, the determination process, the transmission process, and the generation and activation process.

(Appendix 6)
A terminal device for generating hardware resource information of the disaster prevention virtual server;
A disaster prevention virtual server built in a data center by hardware resource information generated by the terminal device;
The terminal device is
A receiving means for receiving disaster information having a disaster area and a disaster level when a disaster occurs;
Based on the disaster information, the scale of the disaster area above a predetermined disaster level is calculated, and the hardware resource information of the disaster prevention virtual server to be generated is calculated based on the hardware resource table or function of the disaster virtual server corresponding to the scale of the disaster area. Generating means for generating;
Transmission means for transmitting a disaster prevention virtual server generation and activation request having hardware resource information of the disaster prevention virtual server to a data center having hardware resources;
The data center has generation and activation means for allocating hardware resources of the disaster prevention virtual server based on hardware resource information of the disaster prevention virtual server, and generating and starting the disaster prevention virtual server,
A disaster prevention system in which a disaster prevention virtual server created and activated in the data center provides a predetermined disaster service.

(Appendix 7)
A disaster prevention virtual server construction program for causing a computer to execute a disaster prevention virtual server construction process for constructing a disaster prevention virtual server in a data center,
The disaster prevention virtual server construction process
A receiving process in which a terminal device receives disaster information having a disaster area and a disaster level when a disaster occurs;
The terminal device calculates the scale of the disaster area above the predetermined disaster level from the disaster information, and generates the disaster virtual server to be generated based on the hardware resource table or function of the disaster virtual server corresponding to the disaster area scale. A generation process for generating hardware resource information;
The terminal device has a transmission step of transmitting a disaster prevention virtual server generation and activation request having hardware resource information of the disaster prevention virtual server to a data center having hardware resources;
In response to the disaster prevention virtual server generation and activation request, the hardware resources of the disaster prevention virtual server are allocated to the data center based on the hardware resource information of the disaster prevention virtual server, and the disaster prevention virtual server is generated and Disaster prevention virtual server construction program to be started.

CX: Terminal device 7: Network 8: Data center
B-VS: Virtual disaster prevention server

Claims (6)

A receiving process in which the terminal device receives disaster information including a disaster area and a disaster level;
A table in which the terminal device calculates the scale of the disaster area above a predetermined disaster level from the disaster information and stores the correspondence between the disaster area scale and hardware resources, or the correspondence between the disaster area scale and hardware resources A generation process for generating hardware resource information of the virtual server to be generated based on a function defining
A transmitting step in which the terminal device transmits a virtual server generation and activation request including the hardware resource information to a data center having hardware resources;
A generation and activation step in which the data center allocates hardware resources of the data center based on the hardware resource information and generates and activates the virtual server;
A disaster service providing step in which the virtual server created and activated in the data center provides a predetermined disaster service;
Providing a disaster service. In claim 1,
In the transmission step, the terminal device logs in the data center and then transmits the virtual server generation and activation request,
A method of providing a disaster service in which the data center does not permit login from another terminal device after the first permitting login of the terminal device. In claim 1, further comprising:
The data center checks whether it is possible to allocate the hardware resource of the hardware resource information transmitted in the transmission step, and if not, rejects the virtual server generation and activation request to the terminal device A confirmation process to
In response to the refusal, the terminal device transmits again the virtual server generation and activation request including the hardware resource information modified to reduce the size of the hardware resource of the virtual server to the data center. A disaster service providing method including a retransmission process. The disaster service providing method according to claim 1, further comprising a virtual server standby step in which the data center does not generate and activate the virtual server in a normal time when no disaster occurs. A terminal device that generates hardware resource information of the virtual server;
A virtual server built in a data center by the hardware resource information generated by the terminal device,
The terminal device is
A receiving means for receiving disaster information including a disaster area and a disaster level;
A table that stores the correspondence between the disaster area scale and the hardware resources or a function that defines the correspondence between the disaster area scale and the hardware resources by calculating the scale of the disaster area above the predetermined disaster level from the disaster information. Generating means for generating hardware resource information of the virtual server to be generated based on
Transmission means for transmitting a virtual server generation and activation request including the hardware resource information to a data center having hardware resources;
The data center has generation and activation means for allocating hardware resources of the data center based on the hardware resource information and generating and starting the virtual server;
A disaster system in which the virtual server generated and activated in the data center provides a predetermined disaster service. A disaster virtual server construction program for causing a computer to execute a virtual server construction process for constructing a virtual server in a data center,
The virtual server construction process
A receiving process in which the terminal device receives disaster information including a disaster area and a disaster level;
A table in which the terminal device calculates the scale of the disaster area above a predetermined disaster level from the disaster information and stores the correspondence between the disaster area scale and hardware resources, or the correspondence between the disaster area scale and hardware resources A generation process for generating hardware resource information of the virtual server to be generated based on a function defining
The terminal device has a transmission step of transmitting a virtual server generation and activation request including the hardware resource information to a data center having hardware resources;
In response to a request to create and start the virtual server, a disaster virtual server that generates and starts the virtual server by allocating hardware resources of the data center to the data center based on the hardware resource information Construction program.

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